Tamping-machine



PatentediJune 1, 1920.

. N.C.STUDY. TMPING MACHINE.

APPLICATION FILED JUNE 10, 1919. La@

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NATHANIEL C. STUDY, 0F`K ALA1VIAZOO, MICHIGAN.

trAMPING-MACHINE.

Application med .Tunev4 1o,

Thrill whom it may concern: i'

Be it known that I, NATHANIEL C. STUDY,

acitizen of the United States, residing at Kalamazoo, Michigan, have invented certain. new and useful 'Improvements in Tamping- Machines, of which the following is a'speci.- ication. v

This invention relates to improvements'in tamping machines.:

My improvements are specially designed by me for embodiment in tie tamping machines, and -I have illustrated and described samekherein as'I have embodied in such a machine Certain features of myimprovements are,' however,'desirable 4for use in other relations. 1` c l The main objects of this invention are: 1 .First, to provide an improved electrically driven tamping machine which is very efficient and at the same time very light Ain weight, simple,feconomical' and durable in `Second, to provide animproved'tamping machine which is conveniently handled by the workman and with comparatively little effort, the same -being easily manipulated in the various relations and positions in which tampers-are required in railway construction and the like. i p

Further objects, vand objects relating to structural detail, will vdefinitely appear from the detailed, description to follow.

I accomplish the objects of my invention by the devices and means described in the tamping machine.

following specification. This invention is clearly defined-and pointed out in the claims.v I

' A structure which is a preferred embodiment of my inventionis clearly illustrated vin the accompanying drawing forming a.

part of this specication', in which:

Figure I is a front view ofmy improved'.

Fig. II is a view partially in tudnal'secton on line 2 2' of Fig. I, and partially in side elevation.

' Fig. III' is a detail view partially in cross'section on a line corresponding to line 3-3 of Fig. II. l

Fig. IV. isa detail View partially in lon i` tudinal section, corresponding vto Fig. I, with the impact member and the tamping bar at the limits of their out strokes Fig. V is a detail view partially 1n section on a line corresponding to line 5.-'-5 of` Specication of Letters 1atent.

central longi- A Patented June 1, 1920. 1ere. seriai No. 303,166.

ciprocates,`and a cap-like retaining member 4 removably securedlto the member 3 by a bayonetA joint, the member 3 being provided with pins 5 and the member 4 with bayonet slots 6.;

The tamping bar has a stop collar 7, the opening in the lower end of member 4 being .The retaining plate 9 has a slot 10 therein so that it may be slipped'upon thetamping bar -below the collar, and seated in retaining-member as shown.

Within `the body member is an electro- Fig. II showing the arrangement of the conf such as to permit the passage of this collar.

magnet or solenoidpll, for actuating the reciprocating impact member 12, the tamping bar being arranged to receive the blows of this impact member. The strokes of the impact member and the tamping member are such that theyv are` separated when both are at the limit'of their strokes (see FigIV). The impact' member is returned by the upper end ofthe solenoid and engages a The circuit is controlled by a pair of fixed contacts 15, one of which is connected to the 4spring 13. The spring 13 is seated on the collar 14 on the upper end of the impact member.

solenoid by the wire 16, and the other. by i wire 19 to `a switch designated generally by the numeral 17 mounted at the end of handle 18. The other lead of the solenoid is indicated at 20. 'The circuit wire leading to the switch 17 is indicated at 21. member 12 carries a contact member 22, it

being yieldingly supported by the coiled spring 24. The contact member 22 has a rounded head 25 which engages the contact members 15 when the impact member is in its initial position, thereby closing the circuit to the solenoid and thereby actuating .the impact member. The spring 24 re- The impact tains contact member 22 in :its circuit closving position during a portion of the stroke of the impact member, thereby insuring its complete actuation at each stroke. c

To prevent the adhering of the impact member to lthe tamping bar, an insulating "disk 26 is arranged in the impact face of lthe tampingbar, thus insuringlthe prompt separating of these parts.

The handle 18, which for convenience is 'grip 27 at its outer end.V I

I provide a-supplementaryor auxiliary trated. The handle 18 is provided with a handley 28 which isa-dapted to be 'mounted handle, said link-like handle member being on an ear 29 on the 'front side of the handle y 18, or on the link-like handle mem'berv 30' which is mounted on an ear 3l at .the lower end of the body. The link-like handle inember 8O isv adapted to be engaged by pin 32 by which the auxiliary handle 28 is mounted on the ear 29 so that it is supported out of the way of the operator.

By providing the handles as illustrated, the machine may be handled and adjusted -to meet the particular requirements of the work, or the convenience of the operator entailing the least effort on the part of the operator.` f

My improved tamping machine is eilicient, is comparatively light in weight, and is economical and durable in construction.

I have illustrated and described my improvements as I have embodied them in a structure which is very satisfactory. I havenot 'attempted to Aillustrate other embodimen-tsor adaptations, as Iv believe the disclosure made will enable those skilled in the art lto which my invention relates to embody or `adapt the same, as may b e desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent,'is-:

l. In a tamper, the combination of a casing-like body member having an ear on its bar reciprocatingly mounted'in saidbody upper side atits lower-end, a rigid mainhandle at the upper end of said body member'disposed in alinement therewith and -having an ear on its upper side and a grip4 at its outer end, a link-like handle member pivotally mounted on said ear on said body, an auxiliary handle provided with a grip and adapted to be mounted on said link-like handle member oron said 'ear on said main adapted. to be engaged by thepin by which said auxiliary handlefis mounted onl said ear, a reciprocating impact member within said body member, and a tamper bar reciprocatingly mounted in said body member' to receive the blows of said impact member.

2, In a tamper, the combination of a'l casinglike body member having an-ear on its tamper bar reciprocatingly mounted in said body member to receive the blows of said ber swung on its pivot or the'body member position,fsaid impact member contact being handle member or on said ear on sai'd main handle', a reciprocating impact member .within said body member and a tamper bar recilprocatingly mounted in saidv body member to receive the blows of said impact member.1 I,

3L In. a tamper, the combination of a cas- :ing-like-body member, a rigid main handle at the upper end of said body member, a

ylink-like handle -member*pivotally mounted on said body memberjat the lower end thereof, an auxiliary handle adapted to be mount-' ed on said link like handle member, or` on the side of said m'ain handle, a reciprocating impact member within said ibody member,

`and a tamper bar reciprocatingly'inounted in said body member'to receive the blows of 90 said impact member,v y

il. In a tamper, the Acombination ing like body member, a fixed main at the upper end of said body member ,Ll v auxiliary handle adapted to Abe mo'unte'y 'on the upper side-.of said main `handle, or on the upper side of said body member at the lower-end thereof, a reciprocating impact member within said body. member, and a impact member.

5. Ina tamper, the combination of a casing-like body member, a rigidmain handle at the upper end of "said body member, a link-like handle member pivotally mounted on the upper side of said body member at the lower end thereof, so that both handles may be grasped andthe second handle memswung thereon, a reciprocating impact member within said `body member, and a tamper mounted 'OHv said impact member and coacting with saidxedvcontacts to close the Acircuit when the impact member is in its initial 12.5 member, a Contact havinga spherical head y yieldingly supported by a spring which maintains the' contacts in engagement during a portion of the work stroke of the impact member, and a tamper bar reciprocatingly mounted in said holder toireceive the blows of said impact 'membeaythe stroke of said tamper bar exceeding `that 'of the impactmember so .that it is out of contact with the impact member when both are at the limit of their out strokes?, said tamping bar having an insulating member in its impact face.

" 7. In a tamper, the ':o'mbinationof-.a casing-likebody member, provided with a han` contactsto close -thecircuit whenthe i1n' -pact member is in its initial position and a tamper bar reciprocatingly mounted in said holder to receive the blows of said impact member, the Astroke of said tamper bar exceeding that of the impact member so that it is-out of. contactwith the impact member when both are at the limit of their out strokes, said tampingibar having an insulatingmember in itsimpact face.

8. -In a tamper, the combination of a casing-like body member, provided with a handle whereby it may be manually manipulated and supported and with a tamping bar holder, asolenoid mounted within said body member, a reciprocating impact member actuated thereby, a 'return sprmg `for sald impact member, an electrical connection for said solenoid comprising a pair of fixedv contacts at the upper end of said body member, -a contact having a spherical head mounted on said impact member. and coacting with said iixed contacts to close the circuit when the impact member is in-its ini` tial position, said impact member contact being yieldingly supported by a spring which maintains the contacts in-engagement .during `a portion ofthe workl stroke of the impact member, and a -tampe'r bar reciprocatingly mounted' in said holder to Ireceive the blows of said impactmember.

9. In a tamper, the combination of. a

. casing-like body member, provided 'with a handle whereby it may be manually manipulated and-supported,' and with a tamping bar holder,a solenoid mounted within said body member, a reciprocating impact mem- .,.ber actuated thereby, ya returnspring for said impact member, an electrical connection foi` said solenold comprising al pair of fixed contacts, a Contact mounted on said impact member and coacting with said fixed contacts to close the circuit` when thevv im-4 pact member is in its initial position, and a tamper bar reciprocatingly mounted in said holder to receive the blows of said impact member.'

10. In a tamper, the combination of a body member provided with a handle where-- by it may be manually manipulated and supported and with a tampingbar'holder, i

a solenoid, a reciprocating impact memberv actuated thereby, a return spring'for said impact member, an electrical connection for said solenoid comprising a pair of iixed con'- ctacts, a contact mounted onv said impact member. and coacting with said fixed conjtacts'to close -the circuit when the impact member is in its initial position, said impact member. contact being yieldingly supported ,-by a spring which maintains they contacts in engagement during a portion of the work stroke of the impact member, and a tamper Abar reciprocatingly mountedin said holder A to receive the blows of said impact member,

the stroke of said tamper bar exceeding that ofthe impact member so that it is out of contact with the impact member when both "are at the limit of their out strokes.

11. In' a tamper, the combination of body member, provided with 'a handle wherebyfit maybe manually manipulated and l supported and with a tamping bar holder,

a solenoid,'fa reciprocating impact member actuated thereby, a return spring `for said impact member, an electrical connection for said solenoid comprising a pair of fixed contacts, a" Contact. mounted on said impact member and coacting with said fixed contacts to close the circuit when the impact member-isv in its initial position, said impact member contact being yieldingly supportedv by a spring which maintains the contacts in engagement during a portion of the work to receive the blows of said impact member.

12. In a tamper, the combination of a bodymember, provided with ahandle whereby it may be manually'manipulated and supported and with a tamping *bar holder, a solenoid, `a reciprocating impact member Y stroke of the impact member, and a tamper I bar reciprocatingly mounted in said holder actuated thereby, a return spring for said l impact member, an electrical connection for said solenoid comprising a, pair of fixedv contacts, a contact on said impact member and coacting with said fixed contacts to close the circuit when the impact member is in its initial position, and .a tamper bar reciprol catingly mounted in saidfhol'dert'o receive the blows of said impact member, the strokes of said tamper bar exceeding that of the impact member so that it is out of contact with the impact member when both are at the limit of their out strokes.

13; In a tamper, the combination Vof a casing-like body member, a tamper bar, an

4- j a -v j "1,341,9447

impact means, a rigid m'an handle 'at the In .witnesis whereof, I have hereunto setupper endofsad body member, and a lnk.- my hand and seal in the presence of two like handle member pvotally mounted on .Witnessespl said bodyat the lower end thereof so that NATHANIL C; STUDY. [L. s.] the body maybe pvoted on said-handle' yWitne'sses: y A

member or the handle memberswling on D. O. STEWART, A lts pvot. E. MCALLISTER. 

